US Bridges

County Road 029 over Dodson North Canal 037

FairPosted for load

Phillips County, Montana · 1M W Dodson · Structure no. L36060000+01001

Built
1990
35 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
41
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 029 over Dodson North Canal 037 is a steel stringer/multi-beam or girder carrying County Road 029 over Dodson North Canal 037 in Phillips County, Montana. It was built in 1990, so it is 35 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 41 vehicles a day, roughly 3% of them trucks, projected to reach 43 by 2043. The structure is 25 ft (7.6 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty Road 029
CrossesDodson North Canal 037
Location1M W Dodson
RouteCounty Highway 36029
CountyPhillips County
StateMontana
Coordinates48.40498, -108.28088
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2023)
Projected traffic43 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 029 over Dodson North Canal 037 built?

It was built in 1990, making it 35 years old in 2025.

What condition is County Road 029 over Dodson North Canal 037 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does County Road 029 over Dodson North Canal 037 carry?

About 41 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Road 029 over Dodson North Canal 037?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 20 ft wide.

Who owns County Road 029 over Dodson North Canal 037?

It is owned by the County Highway Agency.